baber/WOPTO huggingface dataset:
Patent GB-185761-A (GB)
Title: Improvements in or relating to combined electric lamps and magneto-electric generators therefor
IPC: H02K7/18
Filed: 1922-09-11
Abstract: 185,761. Pletscher, O. Sept. 11, 1921, [Convention date]. Magneto-electric machines; magnetos, driving.-A combined electric lamp and magneto-electric generator is provided with one or more disc-shaped permanent magnets having grooves crossing each other centrally to form pole-pieces situated in a plane perpendicular to the rotor axis. As shown in Fig. 3, the armature coils 7 are mounted on a plate 6 within the casing 1, together with the rotating magnet 9 having pole-pieces 13. The rotor shaft 8 is driven by hand through a toothed segment 23, Fig. 1, gearing 25 and a pawl 27. The gearing is arranged between plates 16, 17, and bearings are provided for the shaft 8 in the plates 6, 16.
Patent GB-946932-A (GB)
Title: Refraction correction for radar height finder
IPC: G01S7/40
Filed: 1960-07-14
Abstract: 946,932. Radar height-finder; sawtooth circuits. AVCO CORPORATION. July 14, 1960 [July 17, 1959], No. 26624/60. Headings H3P and H4D. In a height-finding pulse radar the effects of atmospheric refraction and earth curvature are accounted for by computing the true height H t  of an object above the surface of the earth in accordance with the equation when R is the slant range, α is the apparent angle of elevation, ro is the radius of the earth and K(α,N) is a correction factor which is a predetermined function of α and of the refractive index N of the air in the vicinity of the equipment as computed as a function of the dew point, temperature and barometric pressure. As described the radar aerial is scanned in elevation and the echo pulses intensity modulate a C.R.T. having a horizontal slant-range timebase R and a vertical height time-base H t  generated in accordance with the equation when α is the instantaneous angle of elevation of the aerial. As shown, the term K is produced by a shaped K potentiometer 10 ganged to the aerial elevation drive, the potentiometer 10 being connected in series with a selectable one of five resistors 12-16 corresponding to five predetermined values of the refractive index N; alternatively, separate K potentiometers may be provided for different predetermined values of N. One output from the potentiometer 10 is applied to a range integrator 25 triggered by a transmitter trigger pulse to give the term KR which is applied to an earth curvature correc- KR tion circuit 27 giving an output - and 2ro another output from the potentiometer 10 is applied to a sine potentiometer 20 ganged to the elevation drive giving an output K sin α, KR the terms K sin α and - being combined in 2ro the. triggered height integrator 31 to give the required height time-base H t .
Patent GB-293236-A (GB)
Title: Improvements in exhaust silencing and cut-out devices for motorcycles and the like
IPC: F01N13/08
Filed: 1927-09-19
Abstract: 293,236. Vesin, E. Sept. 19, 1927. Exhaust-silencers.-The device which either permits of a free exhaust or serves as a silencer, comprise a pipe 1 attached by a clamp 2 to the engine exhaust pipe, a spring-loaded free-exhaust valve 7, and a silencer located below the pipe and comprising two baffle plates 3, 4 and a flattened pipe 5 with slits 6. The valve 7 is actuated by a pedal 9 and is loaded by the spring in such a manner as to keep it either fully closed or fully opened. A cable control replaces, in a modification, the pedal control in which case the spring is arranged to tend to open the valve, which is kept closed by the cable. Studs are provided on the silencer for attachment of the spring in correct position for either pedal or cable control.
Patent GB-923931-A (GB)
Title: Improved earth boring under-reaming tool
Inventor: AMANN GUSTAV WOLFGANG
IPC: E21B10/32
Filed: 1959-07-17
Abstract: 923,931. Boring earth. ECONOMIC FOUNDATIONS Ltd. May 30, 1960 [July 17, 1959], No. 24712/59. Class 85. An under-reamer comprises a cylindrical container 10 for retention of spoil, superstructure 20, 22 rotatably mounted on the container, blades 26 pivotally mounted on the part 22 of the superstructure which is axially movable relative the part 20 and links 33, each connected to the part 20 and the mid-length of a blade so that the blades may take up an extended position (shown) or a retracted position. The part 20 is of square section and rotates on a stub shaft 21, and the part 22 is also of square section and is adapted to be attached to a kelly at 24. An hydraulic damper 34, interposed between a link and the part 20, serves to limit the speed at which the blades move to the open position when pressure is applied at 24. Spoil may be discharged from the container by releasing latches 16. Radial slots may be provided in the base of the container and means may be provided for locking the superstructure to the container so that the container may be rotated to clean up the bottom of the hole.
Patent GB-644976-A (GB)
Title: Improvements in and relating to apparatus for contacting gases or vapours with liquids
IPC: B01J19/32
Filed: 1948-09-22
Abstract: 644,976. Treating gases with liquids. WILLIAMSON, G. J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Sept. 22, 1948, No. 24779. [Class 55(ii)] Apparatus for treating gases with liquids comprises a packed tower 1 in which a major proportion of the packing consists of one or more units formed from plates 2. the tops of which are thickened on both sides and staggered as shown, liquid being supplied to the tops of the plates. In a modification the tops of the plates may be pear-shaped. The plates may be constructed from wood, metal, earthenware or synthetic resins, and the bottom edges of the plates may also be thickened.
Patent GB-594139-A (GB)
Title: Improvements in or relating to compressors
IPC: F02C3/08
Filed: 1944-12-11
Abstract: 594,139. Gas turbine plant. DAWSON, L. G. Dec. 11, 1944, No. 24794. [Classes 110 (i) and 110 (ii)] In a gas turbine plant, the air is compressed in a compressor comprising a low pressure axial flow compressor and a high pressure centrifugal compressor, the two compressors being driven by coaxial shafts connected to independent axial flow turbines arranged in series. The air compressed in an axial flow compressor 1 passes through ducts 3 and 4 to a centrifugal compressor 2 where it is further compressed before passing through the combustion chambers 11, 12 to the axial flow turbine wheels 7, 8 connected through coaxial shafts 5, 6 with the compressors 1, 2 respectively. When used for aircraft, one of the shafts 5, 6 may be used to drive a propeller or one or more further gas turbines may be provided to drive one or more propellers, the air for the combustion chambers of these turbines being supplied by the compressors 1, 2.
Patent GB-209034-A (GB)
Title: Process for the preliminary treatment of molasses for use in the manufacture of yeast
IPC: C12N1/18
Filed: 1923-10-06
Abstract: 209,034. Hamburger, R., and Kaesz, S. Dec. 23, 1922, [Convention date]. Purifying saccharine liquids.-Molasses for the production of yeast is clarified by producing in it a highly dispersed colloidal precipitate which is then converted into a coarse precipitate either by heating or by the addition of suitable substances. The precipitate can be produced by means of an alkali silicate and an acid or aluminium salts and ammonia. To render the precipitate coarse lime, baryta, strontia, magnesium oxide or aluminium oxide may be emploved. When the precipitate has settled, it is removed by decantation, filtration, centrifuging, &c. Specificatons 6936/87 and 15451/99 are referred to.
Patent GB-158612-A (GB)
Title: Improvements in padlock fastenings for bracelets
IPC: A44C5/20
Filed: 1920-06-29
Abstract: 158,612. Dorling, E. June 29, 1920. Jewellery padlocks.- The shackle 1 of a padlock fastening for bracelets is widened at its hinged end 2 and provided with integral projections 3, 3, engaging holes 4 in the side plates 5 to form the pivot. The distance or spacing piece between the side plates is provided at the ends and the middle of its length with lateral lugs 6 which pass through holes in the side plates and are riveted to secure the parts.
Patent GB-1236719-A (GB)
Title: High frequency beam tubes
Inventor: LEVIN MARTIN ELIA
IPC: H01J23/15
Filed: 1970-05-22
Abstract: 1,236,719. Velocity-modulated tubes; attenuators. VARIAN ASSOCIATES. 22 May, 1970 [16 June, 1969], No. 25004/70. Headings H1D and H1W. In a high-frequency tube-as shown, a klystron-in which a current density modulated beam passes into a collector 13 which is insulated by blocks 21 and ring 22 from the main body of the tube, the escape from the tube of radiation which passes through the gap 27 and insulation ring 22 is prevented by a metal enclosure 26 which contacts the outer electrode of a bypass capacitor 32, and which forms part of an air-filled chamber 35 surrounding the ring 22 and housing wave-absorbing means 36 which is electrically insulative at relatively low frequencies but absorptive at the operating frequency of the tube, whereby arcing across the ring 22 due to resonance modes of oscillation in the chamber is prevented. Means 36 may be constituted by a conduit 37 of loss-free dielectric encircling the collector and containing a lossy coolant liquid-e.g. aqueous sodium dichromate -or the conduit itself may be of lossy material e.g. neoprene rubber. The coolant circulates around a vaporization cooler system which includes a condenser, the conduit 37, and the boiler 18. The collector and cooling structure is secured by screws 31 to a polepiece 8; the capacitor 32 is formed by nylon sheet wrapped around the boiler wall 16 and covered with a brass sheet 33; and the collector is provided with axially directed cooling fins 13.
Patent GB-443583-A (GB)
Title: Process for the manufacture of condensation products from 2.3-hydroxynapthoic acid
Filed: 1934-08-30
Abstract: Derivatives of 2 : 3-hydroxynaphthoic acid, of the formula <FORM:0443583/IV/1> (in which substituents may be present), are manufactured by reacting 2 : 3-hydroxynaphthoic acid with anthranilic acid amide or a substitution product thereof in the presence of a dehydrating agent in an indifferent medium, or by first reacting 2 : 3-hydroxynaphthoic acid chloride with anthranilic acid amide or a substitution product thereof to produce 2 : 3-hydroxynaphthoylanthranilic acid amide or a substitution product thereof and effecting ring closure by heating the amide alone or in an indifferent agent, with or without a condensing agent, or by treating it with a caustic alkali lye.  The products are intermediates for the manufacture of dyestuffs.  In examples : (1) 2 : 3-hydroxynaphthoic acid is heated with anthranilic acid amide in toluene in the presence of phosphorus trichloride ; (2) 2 : 3-hydroxynaphthoic acid chloride (obtained by the action of thionyl chloride on the acid) is heated with anthranilic amide in toluene to produce 2 : 3-hydroxynaphthoylanthranilic acid amide, ring closure of which is effected as follows : (a) by dissolving the amide with heating in dilute aqueous caustic soda ; (b) by introducing the amide into a melt of sodium and potassium acetates ; (c) by heating the amide in a high - boiling indifferent liquid, e.g. in glycerine at 200 DEG  C.; (d) by heating the amide in the presence of a condensing agent, e.g. with fused potassium acetate in amyl alcohol or with a melt of sodium and aluminium chlorides ; (3) 2 : 3-hydroxynaphthoic acid chloride is heated with 4-chloro-2-aminobenzamide in toluene to produce chloro-(4)-hydroxynaphthoylamino-(2)-benzamide, which is boiled with aqueous caustic soda; (4) as in (3) but using 5-chloro-2-aminobenzamide in place of the 4-chloro-compound.  4- and 5-Chloro-2-aminobenzamides are manufactured by the action of aqueous ammonia on the corresponding chloroisatoic acid anhydrides, obtainable respectively by the action of phosgene on an alkaline solution of 4-chloro-2-aminobenzoic acid and by the oxidation of 5-chloroisatin with chromic acid in glacial acetic acid.
Patent GB-942503-A (GB)
Title: Sulfoxidation reaction
Inventor: BLACK JAMES FRANCIS
IPC: B01J19/08
Filed: 1961-07-12
Abstract: Sulphonic acids are obtained from hydrocarbons by contacting a feedstock consisting substantially of straight chain- or cycloparaffins with a mixture of sulphur dioxide and oxygen (or air) in the presence of high energy radiation in an amount so as to allow the reaction to become self-sustaining, after which the supply of radiation is discontinued, and the reaction is continued or restarted by the introduction into the reaction mixture of further hydrocarbon feedstock, sulphur dioxide and oxygen.  After the termination of irradiation, the further hydrocarbon feedstock added may contain olefins and aromatic hydrocarbons but, preferably, such feedstocks are added in increments of not more than 10% by weight of the reacting mass.  The reaction is further improved if the sulphonic acid product is removed during the addition of fresh feed. In a modification, a reaction mixture, which has been rendered dormant by the cessation of irradiation, may be transferred to another vessel and the reaction started up again by supplying fresh hydrocarbon feed and sulphonation gases. Further, a reaction which has terminated due to the cessation of the supply of one or both of the reacting gases, after termination of the high-energy radiation, may be revived by fresh supplies of the gas or gases with hydrocarbon feedstock. The high energy radiation used in initiating the reaction preferably has an energy of over 30 electron volts and can be obtained from x-ray and beta ray machines, waste materials from nuclear reactors, neutron reactors and artificially produced isotopes such as cobalt 60.  The sulphonic acid products may be converted to sulphonates by reaction with basic compounds such as sodium carbonate, calcium oxide and hydroxide, potassium hydroxide, and barium oxide and hydroxide.  In the examples, the initial hydrocarbon feedstock is n-hexane, the additional feedstock, after termination of irradiation, being selected from n-cetane, n-hexane, acid treated kerosene, and a 2% solution of 2,3-dimethyl-butane in n-hexane. Specification 912,903 is referred to.
Patent GB-701417-A (GB)
Title: Improvements in or relating to tenon cutting machines
IPC: B27F1/04
Filed: 1951-10-30
Abstract: 701,417. Wood tenoning. STOLL, G. [trading as FESTO-MASCHINENFABRIK G. STOLL]. Oct. 30, 1951 [Dec. 31, 1948], No. 25322/51. Class 145 (1) A tenoning machine has a crosscutting saw 42 in a guard 43 and two cutter heads 17, 18 to cut and undershoulder the tenon. The heads are mounted for vertical adjustment in superimposed limbs of a frame having the form of a recumbent U and the circular saw, which is disposed at the side of the machine jaw forming the lower limb of the U, is carried on a rocking arm which can be displaced in the longitudinal direction of the tenon. The cutters are driven by motors 11, 12 vertically slidable in the frame by screws 13, 14 and the top part of the U frame 4 is displaceable in dovetail grooves by the screw 8 so that a symmetrical tenon can be cut. The work table 26 runs on wheels engaging runners 24 to feed the work to the saw and thus to the cutters. Fig. 3 shows the arrangement of the saw 42 which is driven by motor 71 mounted on an arm pivoted about a rod 39 and the guard 43 similarly pivoted about a rod 39. A handle 47 fast with the motor 71 allows the saw to be raised out of the guard in which position it can be secured by a locking screw 51 engaging a stirrup 48 secured to the guard. The guard has an abutment 45 engaging the machine frame so that, if the handle 47 becomes unlocked, the saw will pivot into the guard. The assembly of guard and saw can be slid along the rod to adjust the length of tenon cut and a fine adjustment is provided by a hand wheel 54 which displaces the rod carrying the assembly with it. A stop may be provided at the end of the timber remote from the tenon to determine the over-all length of the finished member.
Patent GB-350817-A (GB)
IPC: F04B43/02
Filed: 1930-08-25
Abstract: 350,817. Fuel &c. pumps. LAMBLIN, A., 33, Rue des Dames, Paris. Aug. 25, 1930, No. 25335. Convention date, Aug. 28, 1929. [Class 102 (i).] In a fuel &c. pump the diaphragm or piston 6 has no operating spindle and is acted on on opposite faces by two springs, the weaker spring 91 ejecting the suction stroke and the stronger 9<2> effecting the discharge stroke, being interposed between the diaphragm and an operating cam 14. The springs are guided by a sleeve 12 and a boss 10, the latter serving also to reduce the compression space. With the same object the piston or diaphragm may fit the end wall of the compression space, e.g. the inclined surface 21. The tension of the springs may be adjustable, e.g. by means of a cap screwing on to the sleeve 12. Alternatively, the pump may be operated by a hand-lever.
Patent GB-190547-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/00
Filed: 1921-09-24
Abstract: 190,547. British United Shoe Machinery Co., Ltd., (United Shoe Machinery Corporation). Sept. 24, 1921. Boot-sole sewing-machines; starting and stopping gear.-The stop-gear of a lock-stitch outsole stitcher is arranged to stop the, machine when the take-up has drawn the loop of needle-thread close to the surface of, but not into, the work, as shown in Fig. 2. Governing needle-thread.-The devices are of the same general type as described in Specifications 23478/10, 24331/12 and 1021/14, but two alternatively acting thread locks 28, 30 are mounted on a single lever 32, the auxiliary takeup 23 is positively actuated and a supplementary thread-tension 40 is placed between the main take-up 20 and the looper 14.
Patent GB-311620-A (GB)
Title: Improvements in or relating to bullets and their method of manufacture
IPC: F42B12/34
Filed: 1928-09-04
Abstract: 311,620. Rees, H. F. I., and Chapman. A. K. Sept. 4, 1928. Bullets which spread on impact are formed with pasteboard core divisions 2 having perforations 5, 6 to allow lead connections to be formed during casting to join the lead portions of the bullet together at intervals. The bullet may be spherical or conical.
Patent GB-749475-A (GB)
Title: Improvements in cycles, velocipedes and like vehicles or toy vehicles
IPC: B62K11/04
Filed: 1953-09-15
Abstract: 749,475. Motor vehicle frames. THOMPSON, N. V. Feb. 23, 1954 [Sept. 15, 1953], No. 25482/63. Classes 79 (4) and 136 (3). A frame for a motor tricycle or other vehicle comprises a built-up front section and a built-up rear section joined together by a column 1 common to both sections, each section being formed by a pair of upper members and a pair of lower members, each pair of members diverging at an acute angle from one another from a point adjacent the column, the opposite ends of the upper members being spaced apart and meeting the opposite ends of the correspondingly spacedapart lower members. The front section comprises two members 2, 3 attached to the top of the column 1 and diverging from one another (Fig. 4). Similar members 4, 5 diverge from the bottom of the column 1 (Fig. 5). The free ends of the members 4, 5 meet the corresponding members 2, 3 and form attachment points for the front axle 6. The rear section comprises diverging members 7, 8 and 9, 10 at the meeting points of which are formed attachments for the rear axle 11. Auxiliary stays 12 are also provided. The frames may be placed end to end as shown or side by side.
Patent GB-954551-A (GB)
Title: Improvements in or relating to stainless steels
IPC: C22C38/18
Filed: 1960-07-21
Abstract: .Cr.7 - 12% .Si.1 - 5% .C.up to 0.1% .Mu.up to 1.5% .S.preferably not more than 0.02% .P.preferably not more than 0.4% .Fe.balance apart from impurities The steel may be annealed at 750-800 DEG C. for 10 minutes followed by air cooling. Specifications 789,657 and 789,792 are referred to.
Patent GB-1193256-A (GB)
Title: Improvements in or relating to Piston and Gudgeon Pin Assemblies
Inventor: TYRRELL REGINALD ALFRED
IPC: F16J1/18
Filed: 1966-06-08
Abstract: 1,193,256. Retaining gudgeon pins. WELLWORTHY Ltd. 6 June, 1967 [8 June, 1966], No. 25499/66. Headings F2H and F2T. A retaining device for locating a gudgeon pin in a circular bore 5 in a piston 6 comprises a strip 1 of resilient material having curved ends 2 which engage in diametrically opposed recesses 7 in the piston. The strip, which is made, for example, of spring steel, is bent along two zones 4 and has a length slightly greater than the distance between the bases of the recesses 7 to maintain the strip under compression. To facilitate the fitting and removing of the strip it is provided with a slot 3 for engagement with a tool (not shown).
Patent GB-906174-A (GB)
Title: Improvements relating to polyethylene plastic materials
Inventor: WECHSBERG HEINZ ERICH
IPC: C08K5/20
Filed: 1960-07-22
Abstract: A polyethylene plastic material, e.g. a polyethylene film, contains an ethanolamide of lauric acid in order to reduce the tendency of the material to accumulate electrostatic charges. Preferably the diethanolamide of lauric acid, e.g. in the form of the diethanolamide of coconut fatty acids, is used.  Optional ingredients are carbon black and unspecified pigments, dyes, antioxidants, and anti-block and slip additives.
Patent GB-606683-A (GB)
Title: Motion transforming mechanism
IPC: F16H35/00
Filed: 1945-10-02
Abstract: 606,683. Mechanism for converting reciprocating into rotary motion and vice versa. HARDMAN, J. A., and UTAH SCIENTIFIC RESEARCH FOUNDATION. Oct. 2, 1945, No. 25646. [Classes 80 (i) and 80 (iii)] [Also in Groups XXVII] Mechanism for converting reciprocating into rotary motion and vice versa and particularly applicable to reciprocating engines or compressors, comprises a piston-rod 24 which is guided for reciprocation along its axis and is in driving connection with two rotors or fly-wheels 40 rotating in opposite directions about an axis at right angles to the rod 24 through a doublearmed member 28 rotatably mounted upon the rod 24 and sliding ball-and-socket joints 28b, 46, 47. The fly-wheels 40 are provided with teeth 49 and intergeared by a bevel gear 50 on an output or input shaft 51 having a continuous rotary motion. As applied to an internal-combustion engine, in which case the piston-rod 24 is the driving member and the shaft 51 the output shaft, separate drives are also taken off the shafts 41 of the fly-wheels 40 for valve operating shafts 62, 63. In a modified arrangement the rotary output or input member is mounted concentrically with the reciprocating input or output member and carries a stuffing- box support for the same to maintain the gear casing oil-tight. In another modification, the rotors 40 are not directly geared together but carry spur gears on their shafts meshing with larger gears on parallel shafts, which latter are connected by bevel gearing in a separate gear compartment.